@folio: http://atfolio.u-strasbg.fr/
0m1.com: écrits et théories: http://www.0m1.com/
A9.com: http://a9.com/
AACR2 (Anglo-American cataloguing rules, version 2): http://www.aacr2.org/
AAP (Association of American Publishers): http://www.publishers.org/
ABF (Association des bibliothécaires français): http://www.abf.asso.fr/
ABU (Association des bibliophiles universels): http://abu.cnam.fr/
Académie française: http://www.academie-francaise.fr/
ACM (Association for Computing Machinery): http://portal.acm.org/
Acrobat Reader: http://www.adobe.com/products/acrobat/